HCMaker 7 chain hot bed bracket
thingiverse
Main requirement for this to work: your chain must have an end segment like the one on the photo, a common chain from China, and it must be flexible enough to move freely between the surface printer stands and the heat bed bracket. Two versions are available: left and right. The right version is installed by me and works perfectly. The left version can even be better in practice - you just need to turn the 180-degree heated bed belt bracket. The left version has not been tested by me.
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